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Finding the Fourth Proportional to 35,391.90, 48,824.46 and 21,220.14

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Solution

The fourth proportional to 35,391.90, 48,824.46 and 21,220.14 is: 29,273.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,391.90 : 48,824.46 = 21,220.14 : x
  2. Step 2: Convert to fraction form
    35,391.90/48,824.46 = 21,220.14/x
  3. Step 3: Cross multiply
    35,391.90x = 48,824.46 × 21,220.14
  4. Step 4: Simplify right side
    35,391.90x = 1,036,061,876.62
  5. Step 5: Solve for x
    x = 1,036,061,876.62/35,391.90
  6. Step 6: Final answer
    x = 29,273.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.